package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.uilt.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.mapper.SystemUserMapper;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import lombok.RequiredArgsConstructor;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@RequiredArgsConstructor
@Service
public class LoginServiceImpl implements LoginService {

    private final StringRedisTemplate redisTemplate;

    private final SystemUserMapper systemUserMapper;

    @Override
    public CaptchaVo getCaptcha() {
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);

        String code = specCaptcha.text().toLowerCase();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();
        String image = specCaptcha.toBase64();
        // timeout 存活时长 1小时
        redisTemplate.opsForValue().set(key,code,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC*60, TimeUnit.SECONDS);
        return new CaptchaVo(image,key);
    }

    @Override
    public String login(LoginVo loginVo) {
        // 1. 判断验证码是否输入
        if (!StringUtils.hasText(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }

        // 2.校验验证码
        String code = redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (code == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }

        if (!code.equals(loginVo.getCaptchaCode().toLowerCase())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }

        // 3.验证用户是否存在
        SystemUser systemUser = systemUserMapper.selectOne(new LambdaQueryWrapper<SystemUser>().eq(SystemUser::getUsername, loginVo.getUsername()));
        if (systemUser == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        //4.校验用户是否被禁用
        if (systemUser.getStatus() == BaseStatus.DISABLE) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }

        //5.校验用户密码
        String inputPwd = DigestUtils.md5Hex(loginVo.getPassword());
        if(!inputPwd.equals(systemUser.getPassword())){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        //6.创建并返回TOKEN
        return JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());

    }

























}
